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    <title>Document</title>
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    <p>合并单元格6，7 colspan</p>
    <p>合并单元格15 20 rowspan</p>
    <p>colspan 保留左边删除右边</p>
    <p>rowspan 保留上边删除下边</p>
    <p>合并单元格13 18 23</p>
    <table border="1" width="600px" height="400px">
        <tr>
            <td>单元格1</td>
            <td>单元格2</td>
            <td>单元格3</td>
            <td>单元格4</td>
            <td>单元格5</td>
        </tr>
        <tr>
            <td colspan="2">单元格67</td>
            <td>单元格8</td>
            <td>单元格9</td>
            <td>单元格10</td>
        </tr>
        <tr>
            <td>单元格11</td>
            <td>单元格12</td>
            <td rowspan="3">单元格</td>
            <td>单元格14</td>
            <td rowspan="2">单元格1520</td>
        </tr>
        <tr>
            <td colspan="2" rowspan="2">单元格16</td>
            <td>单元格19</td>
        </tr>
        <tr>
            <td>单元格24</td>
            <td>单元格25</td>
        </tr>
    </table>
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